[magento] Create a script to show all categories with tree structure

<?php

define('MAGENTO', realpath(dirname(__FILE__)));

require_once MAGENTO . '/../web/app/Mage.php';

Mage::app();

$category = Mage::getModel('catalog/category');
$tree = $category->getTreeModel();
$tree->load();

$ids = $tree->getCollection()->getAllIds();
$categories = array();
$result = array();

if ($ids) {
    foreach ($ids as $id) {
        $category->load($id);
        $categories[$id]['name'] = $category->getName();
        $categories[$id]['path'] = $category->getPath();
    }

    foreach ($ids as $id) {
        $path = explode('/', $categories[$id]['path']);
        $string = '';

        foreach ($path as $pathId) {
            $string.= $categories[$pathId]['name'] . '/';
            $cnt++;
        }

        $string = rtrim($string, '/');
        $string = str_replace('Root Catalog/Default Category/', '', $string);

        $result[] = $string;
    }
}

asort($result);

foreach($result as $category) {
    echo $category . PHP_EOL;
}